{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "450527977",
    "entityType": "User",
    "nonce": "0x0b0d285d59cfaf59323caa81c691382010e734569d036e85f15f23c443699794",
    "signature": "0x16a88392e318739c5c9addfc7e2a81ec791951e6b2ed3119d51c71cafa121cbb6aba87b702a87266b8f4252d26fcc6297011c9677dcad01fa3758b72a96b06321b",
    "signer": "0x9eE057749F8A47B55cff6F84dc7c9b0Eb2F78A52",
    "userId": "565532197"
  }
}